What airlines fly to Lisbon?

United Airlines, American Airlines and British Airways are the top three most popular airlines that fly to Lisbon from Knoxville according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $554.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Lisbon Humberto Delgado?

United Airlines and British Airways are the most popular carriers operating from Knoxville McGhee Tyson to Lisbon Humberto Delgado

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 52m.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 37m.

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

As of March 2026, there are 3 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$377 Cheap Flights from Knoxville to Lisbon in 2026

Q: What is the typical price of a round-trip flight between Knoxville and Lisbon?

Prices are currently low for flights on this route. Typical prices usually range from $690 to $1,027. The lowest price recently found on this route was $602.

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Enter your travel dates to find the best prices.

5:06 pm - 11:00 pm

TYS

LIS

24h 54m

2 stops

11:05 am - 9:57 pm

LIS

TYS

15h 52m

1 stop

$602British Airways

Tue, Apr 21 - Wed, Apr 29

2:06 pm - 11:10 pm

TYS

LIS

28h 04m

2 stops

6:45 pm - 8:18 pm

LIS

TYS

30h 33m

2 stops

$622British Airways

Mon, Apr 20 - Mon, Apr 27

7:20 pm - 10:45 pm

TYS

LIS

22h 25m

2 stops

6:15 am - 10:34 pm

LIS

TYS

21h 19m

2 stops

$624Lufthansa

Mon, Apr 20 - Mon, Apr 27

5:53 pm - 10:10 pm

TYS

LIS

23h 17m

2 stops

5:05 am - 11:08 pm

LIS

TYS

23h 03m

2 stops

$634Lufthansa

Tue, Apr 21 - Wed, Apr 29

4:00 pm - 9:00 am

TYS

LIS

36h 00m

2 stops

6:25 pm - 9:46 pm

LIS

TYS

32h 21m

2 stops

$659Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

11:31 am - 4:05 pm

TYS

LIS

23h 34m

2 stops

6:35 am - 8:18 pm

LIS

TYS

18h 43m

2 stops

$677Iberia

Tue, Apr 21 - Wed, Apr 29

11:31 am - 4:05 pm

TYS

LIS

23h 34m

2 stops

8:45 pm - 9:21 pm

LIS

TYS

29h 36m

2 stops

$688Iberia

Tue, Apr 21 - Tue, Apr 28

5:06 pm - 2:30 pm

TYS

LIS

16h 24m

2 stops

11:05 am - 9:57 pm

LIS

TYS

15h 52m

1 stop

$701British Airways

Tue, Apr 21 - Tue, Apr 28

5:06 pm - 3:35 pm

TYS

LIS

17h 29m

2 stops

11:05 am - 9:57 pm

LIS

TYS

15h 52m

1 stop

$702British Airways

Tue, Apr 21 - Wed, Apr 29

5:06 pm - 5:55 pm

TYS

LIS

19h 49m

2 stops

6:45 pm - 9:21 pm

LIS

TYS

31h 36m

2 stops

$706British Airways

Mon, Apr 20 - Mon, Apr 27

United Airlines flights from Knoxville to Lisbon

Our best United Airlines deals on Knoxville to Lisbon flight tickets

United Airlines

Apr 5

TYS7:20 pmKnoxville McGhee Tyson

10h 10m

1 stop

LIS10:30 amLisbon Humberto Delgado

Apr 18

LIS11:25 amLisbon Humberto Delgado

40h 09m

2 stops

TYS10:34 pmKnoxville McGhee Tyson

$725

United Airlines

Apr 5

TYS7:20 pmKnoxville McGhee Tyson

10h 10m

1 stop

LIS10:30 amLisbon Humberto Delgado

Apr 18

LIS11:25 amLisbon Humberto Delgado

40h 09m

2 stops

TYS10:34 pmKnoxville McGhee Tyson

$753

United Airlines

Apr 2

TYS1:52 pmKnoxville McGhee Tyson

27h 53m

2 stops

LIS10:45 pmLisbon Humberto Delgado

Apr 18

LIS11:25 amLisbon Humberto Delgado

40h 09m

2 stops

TYS10:34 pmKnoxville McGhee Tyson

$792

British Airways flights from Knoxville to Lisbon

Our best British Airways deals on Knoxville to Lisbon flight tickets

British Airways

Apr 21

TYS5:06 pmKnoxville McGhee Tyson

24h 54m

2 stops

LIS11:00 pmLisbon Humberto Delgado

Apr 29

LIS11:05 amLisbon Humberto Delgado

15h 52m

1 stop

TYS9:57 pmKnoxville McGhee Tyson

$602

British Airways

Apr 20

TYS2:06 pmKnoxville McGhee Tyson

28h 04m

2 stops

LIS11:10 pmLisbon Humberto Delgado

Apr 27

LIS6:45 pmLisbon Humberto Delgado

30h 33m

2 stops

TYS8:18 pmKnoxville McGhee Tyson

$622

British Airways

Apr 21

TYS5:06 pmKnoxville McGhee Tyson

16h 24m

2 stops

LIS2:30 pmLisbon Humberto Delgado

Apr 28

LIS11:05 amLisbon Humberto Delgado

15h 52m

1 stop

TYS9:57 pmKnoxville McGhee Tyson

$701

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

5:06 pm-11:00 pm

2 stops24h 54m

Lisbon Humberto Delgado

Wed 4/29

11:05 am-9:57 pm

1 stop15h 52m

$602

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Mon 4/20

2:06 pm-11:10 pm

2 stops28h 04m

Lisbon Humberto Delgado

Mon 4/27

6:45 pm-8:18 pm

2 stops30h 33m

$622

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Mon 4/20

7:20 pm-10:45 pm

2 stops22h 25m

Lisbon Humberto Delgado

Mon 4/27

6:15 am-10:34 pm

2 stops21h 19m

$624

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

5:53 pm-10:10 pm

2 stops23h 17m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-11:08 pm

2 stops23h 03m

$634

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 9/5

4:00 pm-9:00 am

2 stops36h 00m

Lisbon Humberto Delgado

Sat 9/12

6:25 pm-9:46 pm

2 stops32h 21m

$659

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

11:31 am-4:05 pm

2 stops23h 34m

Lisbon Humberto Delgado

Wed 4/29

6:35 am-8:18 pm

2 stops18h 43m

$677

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

11:31 am-4:05 pm

2 stops23h 34m

Lisbon Humberto Delgado

Tue 4/28

8:45 pm-9:21 pm

2 stops29h 36m

$688

Quickest round-trip

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

5:06 pm-2:30 pm

2 stops16h 24m

Lisbon Humberto Delgado

Tue 4/28

11:05 am-9:57 pm

1 stop15h 52m

$701

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 4/21

5:06 pm-3:35 pm

2 stops17h 29m

Lisbon Humberto Delgado

Wed 4/29

11:05 am-9:57 pm

1 stop15h 52m

$702

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Mon 4/20

5:06 pm-5:55 pm

2 stops19h 49m

Lisbon Humberto Delgado

Mon 4/27

6:45 pm-9:21 pm

2 stops31h 36m

$706

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Knoxville and Lisbon?

What is the cheapest month to fly to Lisbon?

In general, February is the cheapest month to fly from Knoxville to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $480. If you are unable to visit Lisbon during the month of February, then departing from Knoxville during the month January is also very affordable. Most momondo users find prices during this month for around $502.

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 35% on your flight if you consider stops on a Knoxville to Lisbon flight.

When to book flights from Knoxville to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Fastest flight time	19h 08m
Direct flights	None

The fastest flight from Knoxville to Lisbon takes 19h 08m

There are no direct flights from Knoxville to Lisbon. There are no popular flight routes from Knoxville to Lisbon.

Search flight deals

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?
Lisbon Humberto Delgado is 3990.0 mi away from Knoxville McGhee Tyson. 19h 08m is a normal flight duration for this route.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
As of March 2026, there are 3 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Lisbon is United Airlines (46% of total bookings). The next most popular airlines are British Airways (32%) and American Airlines (22%).

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $475	Free Cancellation	Rating 6.7 7,784 reviews	Search British Airways flights
United Airlines	PriceFrom $633	Free Cancellation	Rating 7.4 9,418 reviews	Search United Airlines flights
American Airlines	PriceFrom $793	Free Cancellation	Rating 7.1 11,432 reviews	Search American Airlines flights

Sintra

Fátima

Ericeira

Nazaré

Setúbal

Peniche

Estoril

Evora

Oeiras

Sesimbra

Leiria

Figueira da Foz

Tomar

Zambujeira do Mar

Óbidos

Batalha

Sines

Torres Vedras

Comporta

Almada

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Lisbon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Knoxville to Lisbon. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Knoxville.

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

Price alerts on flights to Lisbon from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Knoxville to Lisbon from $377

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 3/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Knoxville to Lisbon

What is the typical price of a round-trip flight between Knoxville and Lisbon?

What is the cheapest month to fly to Lisbon?

Can stopping save me money on Knoxville to Lisbon flights?

What is the cheapest airline that flies from Knoxville McGhee Tyson to Lisbon Humberto Delgado?

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Which layover airport has the shortest connection time from Knoxville to Lisbon?

When to book flights from Knoxville to Lisbon

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

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Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

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An easier way to manage your Lisbon trip

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